Unfortunately Mfenn is correct. The industry doesn't support what you are asking. The OMAP 4 has well over 500 pins on it. Human hands are completely incapable of working with these microchips. You would need professional board working equipment (basically a your own board fab).
Normally, development is done on pre-made development kits that have the chips placed on large breakout boards that development is performed in. When the functions are perfected, the real board production process is started with batches of boards being produced until the final revision is reached. These boards are then produced. At no point, does manual soldering of the chip takes place because its impossible.
Because of the way this industry works, there is no way you are going to find these chips in the way you are looking for.